Bat biologist Dr. Dan Riskin joins the show for The Science Appliance. David and Dan go over a new way to cook eggs and how afternoon naps make you smarter. (Sign up for Dan's newsletter here.) Rachel Van Nortwick discusses her dating app Vinylly – which matches you based on music compatibility. Dr. Christina Vogels explains her recent article about "tradwives": the social media trend where women choose to take up traditional gender roles at home, centred around serving their husband and children.

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